Locking device



Jan. 22, 1929.

R. R. KENWORTHY LOCKING DEVICE Filed Ju I18. 1927 3 Sheets-Sheet 1 /0 INVENTOR. FOBER /E/fE/VWOR rm,

R. R. KENWORTHY LOCKING DEVICE Filed June 1, 1927 g 3 Sheets-Sheet 2 WM ATTORNEYS.

Patented Jan. 22, 1929.

UNITED. STATES PATENT OFFICE.

ROBERT R, KENWORTHY, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- FOUR'IH TO JOHN F. DALY, ONE-FOURTH T0 WILLIAM DONAHUE, AND ONE-FOUR'II-I TO BYRON R. KENWORTHY, ALL OF PHILADELPHIA, PENNSYLVANIA.

LOCKING DEVICE.

Application filed June 1,

This invention, .generally stated, relates to apparatus or a device whereby the insert-ion of a key and proper operation of the same permits one element to be moved with respect to another element so that the completing or breaking of a circuit is produced, also resulting in the locking of the two elements with respect to one another.

The principal object of the present invention may be said to reside in the provision of an apparatus or a device of the character above statedin which both a conventional single position barrel and a conventional barrel of the two-position type may be employed in the operation of an automobile, whereby the driver may lock the car against unauthorized operation of the same, by op erating both mechanical and electrical elements at once.

Other and further objects of the present invention reside in the provision of general details of construction and arrangement and combination of parts for attaining the results sought by the leading object.

The invention consists of the novel const-ruction hereinafter described and finally claimed.

The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection withthe accompanying drawings forming part hereof, and in which:

Fig.1, is a fragmentary view in central section of a conventional single position barrel having applied thereto parts embodying the present invention, the position shown being that with the motor running.

Fig. 2, is a view similar to Fig. 1 showing the circuit grounded.

Fig. 3, is a view in vertical section taken upon the line 3-3 ofFig. 2.

4, is a detailed view of the cam shown. in the. foregoing figures.

Fig. 5, is a detailvie'w of the bolt shown in the foregoing figures.

Fig. 6, is a fragmentary view in section showing a modified form in which instead of grounding the circuitthe contact is main- 1927. Serial No. 195,658.

tained while the lock is in unlocked or operating position. I

Fig. 7, is a further modified form in central section,

Fig. 8, is a fragmentary view showing details of construction as disclosed in Fig. 7.

Fig. 9, is a further modified form in central section hereinafter referred to.

Fig. 10, is a fragmentary view in central section of a further modified form hereinafter referred to.

Fig. 11, is a fragmentary view in central section hereinafter referred to.

Fig. 12, is a fragmentary View in central section illustrating a modified form in which conventional barrels of the two-position type are employed.

Fig. 13, is a fragmentary view in horizontal section showing the details of construction as disclosed in Fig. 12.

Fig. 14, is a fragmentary view in vertical section hereinafter referred to.

Fig, 15, is a fragmentary view in plan showing certain of the parts disclosed in Fig. 14.

Fig. 16, is a fragmentary view in vertical section hereinafter referred to.

For the purpose of illustrating my invention I have, shown in the accompanying drawings several forms thereof which arev at present preferred by me, since the same have been found in practice to give satisfactory and reliableresults,althoughitis to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

Referring now especially to' Figs. 1 to 5 1nclusive, the disclosure relates to what is known in the trade as a conventional single position barrel. In the trade this means that the bperating key may be removed in one position only, to wit: that position in which it was originally inserted within the lock. Referring now to Fig. 1, the device is shown in unlocked or steering position, the reference numeral 1 showing the removable key which operates the locking mechanism. By the insertion or removal of the key 1, the switch is controlled, as will hereinafter appear. 2 designates the barrel of the conventional single position type within which the key 1 is adapted for insertion. The barrel is provided with the conventional combination pins or tumblers 3 arranged to align with spring pressed tumblers 4;. This particulartype of lock is preferrechbut other types of locks may be used as will appear hereinafter. 5 designates the wheel or movable part which is to be held in a certain relative position with respect to the hub 6, the part 5, for purposes of illustration, being an automobile steering wheel. The wheel 5 is provided with a pair of apertures 7 and 8, the aperture 8 having arranged across the same a pin '9. Arranged crosswise of the hub 6 is a spring pressed bolt 10, see Fig. 5, having a slotted portion 11 through which slotted portion passes a spindle 12 of a spool 13. The bolt 11 is also provided with a notched part 14 adapted to cooperatively engage with the part 15 of the cam 16, see Fig. 4. The spindle 12 is vertically arranged and extends up through the slot 11 of bolt 10 and through the cam 16 so that in steering position of the wheel the motor is running, for the pin is held in depressed position because the upper flange 17 of the spool 13 is held beneath the bottom of bolt 10 because the pin 9 prevents the lug of the bolt from moving beyond the peripheral edge of said upper flange of the spool. However, when the key 1 is inserted and turned, the bolt 10 is shifted to the left so that the steering wheel 5 may be depressed, thus enabling the apertures 7 to come in alignment with the bolt 10, whereupon the bolt may be shifted into aperture 7 which does not have a pin as does the aperture 8 and the lug of the bolt moves outward clear of the peripheral edge of the'upper flange so that the spool is free to move upwardly, thus permitting the spring pressed spindle 12 to move up in the barrel 2 when the key 1 is withdrawn. This permits grounding of the circuit to the ignition system. This circuit connection is made possible by the ring 18 which surrounds the hub 6 and is provided with a horizontal pin 20 both insulated from hub 6, see Fig. 3, the said ring 18 connecting by wire 21 with the ignition system. Thus, in Fig. 1 the steering position or unlocked position of the device is shown, whereas in Figs. 2 and 3 the locked position of the steering wheel or grounded position of the circuit to the ignition system is disclosed. Of course, the steering post 22 is operatively connected with the hub 6 and the usual surrounding casing 23 is provided.

Referring now to the operation of the above described parts, and referring first to Fig. 1, the automobile is in running position and the operator has just inserted key 1 to stop the motor. The operator turns the key, thus withdrawing bolt 10 from the lower aperture 8. The driver now depresses the steering wheel 5 to the positions shown in Figs. 2 and 3, again turns the key 1 so that the bolt 10 engages aperture 7 and locks the steering wheel 5 with respect to hub 6. The driver nowremovesthekey1,whereupon the spool 13 which has been held down during this period of time by the key 1 is spring impelled in an upward direction, thus grounding the circuit to the ignition system. To start the machine the driver is again compelled to insert the key 1, whereupon spindle 12 and spool 14 are depressed causing lower flange of the spool 14 to move from contact with the pin 20, thereby breaking the circuit, and turns the same so that the bolt 10 is withdrawn from the aperture 7 in the steering wheel 5 so that the steering wheel may be bodily lifted. The operator again turns the key 1 so that the bolt 10 engages the aperture 8 in the hub 6. It will be recalled that thevertical pin 9 retards or restricts the travel of bolt 10 so that the spool 13 is held in down position, thereby holding the grounding circuit incomplete to the ignition system.

Taking up now Sheet 2 of the drawings, and with especial relation to Fig. 6, there is disclosed a construction in which a contact is maintained constant in contradistinction to grounding the circuit as in the foregoing sition. In the drawing, Fig. 6 shows thelock I with the bolt in locked position and with the key in the conventional single position barrel. When the key 2 1 is removed from the barrel 25 while the bolt 26 is in the position shown in said Fig. 6, the stem 27 and the guide block 28 which is attached thereto will follow the key outwardly because the upper end of the stem 27 has been abutting against the lower end of the key 24. With the removal of the key the circuit formed at A is broken. By again inserting the key 24c to interlock the movable parts the circuit at A is immediately completed by the depression of the guide block 28, thus permitting the bolt 26 to be withdrawn when the key 2a is turned. So that by pushing the steering wheel 29 clownwardly so that the aperture 30 thereof comes into alignment with the bolt 26, the bolt 26 will move into the aperture 30 which is more shallow than is the aperture 31 in the steering wheel, thus preventing the bolt from assuming its normal position. By this arrangement the shoulder B is positioned to intercept the upward movement of theguide block 23 when the key 24 is removed. Thus the circuit at A. is maintained.

In Fig. 7, there is shown an attachment in which the key 32 when inserted depresses a plate 33 by interception of the hilt of the key against the spring 33 and depressing likewise aspring pressed rod 34. The depression of the spring pressed rod makes a contact between a battery and ignition circuit at point A, and at the same time releases the shiftable bolt 35. With the release of the shiftable bolt the operator by turning the key 32 may shift the bolt 35 so that the steering wheel is locked with respect to the hub 36. Fig. 8 shows a detail of bolt and position of shoulder B. When in the locked position here shown the shoulder B will not intercept the insulated collar 34 allowing the spring 33 to lift plate 33, rod 34 and collar 34 to break contact at A. Conversely in the locked position, bolt 35 is inserted in the shallow aperture so that shoulder B intercepts collar 34 preventing pressure of spring 33 from raising stem 34, with which collar 34 is integral, when key 32 is removed.

Referring now to Figs. 9 and 10, and with more especial relation to Fig. 9, the key 37 is so shaped that by insertion in the barrel 38 the rear bevelled part 39 moves endwise the stem 40 which in turn moves around a pivot polnt 41, a detent 42-44 one end of which disengages the bolt 43 to permit the barrel 38 and its associated cam to operate the bolt 43. WVhen the bolt 43 is then inserted in a restricted hole as similar to that shown in Fig. 8, the detent 42 rests on the side of the bolt, not in the slot provided, thereby providing that when the key 37 is removed the spring cannot cause the detent to assume its original position and the circuit is maintained at 45, which is a slide type switch. Conversely when key 37 is inserted to lock the device the bolt is shifted and the locking mechanism is placed in the theft resisting position, whereby the bolt is entered into the deep hole, and the slot in the side of the bolt is aligned with the detent 42. When the key is removed, the stem 40 moves inward as the bevel 39 passes it and one end of the detent 42 drops into slot provided. Circuit at 45 is thereby broken.

Referring now to Fig. 10, the construction is very much similar to that shown in Fig. 9, with the exception that the key 46 instead of being bevelled upon its rear face as in Fig.

9, is bevelled as at 47 for contact with the horizontally arranged slidable bolt 40.

Taking up now the modification shown in Sheet 3, and referring to Fig. 11, this figure shows a construction very similar to that shown in Sheet 2, Figs. 9 and 10, with the exception that the barrel part 48 is provided with a horizontally disposed pin or stem 49, being a part of the spring pressed tumbler, the bolt 43 and detent parts 4244 being similar in all respects to the part shown in Figs. 9 and 10, including the switch part 45. The remaining figures upon Sheet 3 are of the type which is in the trade termed conventional barrels of the two-position type.

By this construction the key can be removed from either of two positions which was not true in the foregoing constructions.

Figs. 12 and 13 are very similar to the construction shown in Fig. 6 except that the key 50 can be removed from barrel 51 from either of two positions. Therefore, the same reference numerals have been applied to Fig. 12, as showing conventional parts shown in Fig. 6.

The operation is assumed 011 atwo-position barrel in which one position, namely locked, is shown. Then key 50 is inserted, stem 27 is depressed, making guide 28 exert a pressure against contact blades, giving a circuit at A. As the hole 61 is now at an angle relative to the shoulder of stem 27, said shoulder cannot enter said hole as the key is withdrawn in its second position. Therefore, circuit is. maintained. Conversely, when key is inserted and the bolt placed in locked position, the shoulder of stem 27 and the hole 61 are in perfect alignment, and stem 27 is free to follow the key 50 upward as said key is withdrawn, thereby allowing circuit at A to be broken as the blade assumes a normal flat position.

Referring now to Figs. 14 and 15, the construction is somewhat similar to that shown in Fig. 7 except that the plate 52 which intercepts the hilt 53 of the key 32 is polygonal so that when the key depresses said plate 52 to operable position the points formed by the said plate 52 will be below the encompassing plate 52 and when turned will intercept the under sidesof the chamber forming plate 52 in which said depressible plate 52 was permitted to ride when the key 32 was in locked position, maintaining circuit at A.

Taking up now Fig. 16, there is shown a construction in which a two-position barrel 54 is operated by a key 55 having a bevelled edge 56. This bevelled edge 56 is on the rear of the key and when the key 55 is inserted in the barrel 57 the stem 58 is moved outwardly by the bevelled part 56 of key 55 so that connection is made with the battery and ignition. hen the key 55 is turned the bolt 59 is dis engaged from the steering wheel 60. This construction may be modified in the manner in which Fig. 9 is described in forms shown in Figs. 10 and 11.

It will now be apparent that I have devised a novel and useful construction which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description and while I have in the present instance shown and de scribed the preferred embodiments thereof which have been found inpractice to give satisfactory and reliable results, it is to be understood that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

In a lock of the character stated, a pair of elements arranged to be interlocked, a locking mechanism including a barrel to receive a key, means including a device shiftable for interlocking said elements, and an automatic electrical control including a switch associated with said device connected with an ignition system, whereby the locking control of said elements is coincidental With key removal and the operation of said switch is prevented by the removal of the key while the lock is in unlocked or driving position.

ROBERT R. KENXVORTHY. 

